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Steganography serves as a means for private, secure and sometimes malicious communication. Steganography is a technology that hides a message within an object, a text, or a picture. It is often confused with cryptography, not in name but in appearance and usage. The easiest way to differentiate the two is to remember steganography conceals not only the contents of the message but also the mere existence of a message. The original steganographic applications used “null ciphers”, or clear text. A null cipher conveys that the message has not been encrypted in any way,whether it is using basic character shifting, substitution or advanced modern day encryption algorithm. So, the message is often in plain view but for a reason can either not be detected as being present or cannot be seen once detected. As is common with cryptography, steganography has its roots in military and government applications and has advanced in ingenuity and complexity. We will explore several approaches to the process of steganography as well as steganalysis. Steganalysis is the method by which to detect the presence of a hidden message and attempt to reveal the true contents of this message. This technology has also substantially evolved throughout history and often lags behind new steganographic discovery as a reactive attempt to detect and decipher messages. Continue reading “The Art Of Hiding Information ( Steganography )”